The check valve is an automatic valve that automatically opens and closes the valve disc depending on the flow of the medium itself to prevent the reverse flow of the medium.

The company introduces the following three types of check valves:

1. Swing check valve

The main models are: fully lined h44f46 and h74f46 single valve swing type series and h76f46 double valve swing type series. Their structural form is: the valve disc rotates and opens and closes around the (PIN) axis outside the valve seat to prevent the medium from flowing back. The features of h44f46 and h74f46 check valves are as follows: (PIN) shaft and valve disc are designed as a whole, all of which are lined with FEP (PIN) shaft and embedded in the special groove formed between the valve body and the valve cover, with flexible opening and closing and reliable sealing. In addition, the features of h72f46 and h76f46 check valves are as follows: in addition to the valve body and valve disc, the return spring is also lined with corrosion-resistant fluoroplastic, and the spring is reasonably designed, The valve disc can also generate sufficient sealing specific pressure in the low pressure area to ensure the reliability of valve sealing in the low pressure area.

2. Lifting vertical check valve

The main models are fully lined h40f46, h42f46 and h71f46 lifting vertical check valves. Among them, h40f46 is a new type of structure, and the valve disc is hemispherical. Their common feature is that the fluorine lined disc moves up and down along the passage axis of the valve body.

3. Lift check valve

The main models are: fully lined h41f46 straight lift check valve. Its structural feature is that the fluorine lined valve flap moves vertically to the inlet and outlet axes of the valve body, that is, to realize the valve opening and closing process.